The El Dorado County Air Quality Management District issued a smoke advisory and said they expect areas of the county will be affected by fire smoke for at least several days and likely longer.
But just where in the county the smoke is most prevalent, depends on fire activity, terrain, wind direction and weather.
El Dorado County air pollution officials say fine particles in the wildfire smoke can cause health issues, especially for children, the elderly and people with respiratory problems.
In Nevada, Washoe County issued a health advisory due to smoke from the King Fire.
The winds pushed the smoke over the Reno-Sparks area this week.
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